Mark Constable via Postfix-users:
> Hi folks, I have googled for this but not found a definitive answer.
>
> I have two IPs for my postfix server and want to send out most emails
> from one IP but a few via the alternate IP. I'm using this in main.cf...
>
> sender_dependent_default_transport_maps = lmdb:/etc/postfix/sender_transport
>
> and have a /etc/postfix/sender_transport file with...
>
> @domain1 smtp1-out:
> @domain2 smtp1-out:
> @domain3 smtp2-out:
> @domain4 smtp2-out:
> @domain5 smtp2-out:
> etc, with many more going out through smtp2-out.
To send all mail through smtp2-out, except for mail from domain1 and domain2:
/etc/postfix/sender_transport:
@domain1 smtp1-out:
@domain2 smtp1-out:
/etc/postfix/main.cf:
default_transport = smtp2-out
sender_dependent_default_transport_maps = lmdb:/etc/postfix/sender_transport
Wietse
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